Maple syrup urine disease
MONDO:0009563An autosomal recessive inherited disorder caused by mutations in the BCKDHA, BCKDHB, DBT, and DLD genes. It is characterized by a deficiency of branched-chain alpha-keto acid dehydrogenase complex, leading to accumulation of metabolites in the body fluids. The name of the disease derives from the sweet odor of the urine in infants, reminiscent of maple syrup. Signs and symptoms usually appear in infancy and include lethargy and developmental delays. If untreated, it may lead to seizures, coma, and death.
Also known as: BCKD deficiency, BCKDH deficiency, Ketoacidaemia, MSUD, branched chain ketoaciduria, branched-chain 2-ketoacid dehydrogenase deficiency, branched-chain ketoaciduria, maple syrup urine disease
28 clinical trials for this condition and its sub-types.
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Broader categories
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New medical food tolerability study for rare metabolic conditions
Disease control CompletedThis study looked at whether a special medical food called Express Plus is acceptable for children and adults with certain inherited metabolic disorders like PKU and maple syrup urine disease. Over 28 days, 28 participants tried the product and reported how well they liked it, ho…
Phase: NA • Sponsor: Vitaflo International, Ltd • Aim: Disease control
Last updated Jun 27, 2026 12:34 UTC
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New chemo combo may lower death risk in child stem cell transplants
Disease control CompletedThis study tested two different chemotherapy drugs (Treosulfan and Busulfan) given before a stem cell transplant in 106 children with serious non-cancer diseases like immune disorders, metabolic diseases, blood disorders, and bone marrow failure. The goal was to see which drug le…
Phase: PHASE2 • Sponsor: medac GmbH • Aim: Disease control
Last updated Jun 27, 2026 08:03 UTC
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New metabolomic test could spot rare metabolic diseases faster
Diagnosis CompletedThis study tested a new method called global metabolomic profiling to diagnose inborn errors of metabolism, a group of rare genetic disorders. Researchers compared this approach to traditional testing in 240 participants. The goal was to see if the new method could more accuratel…
Sponsor: Mayo Clinic • Aim: Diagnosis
Last updated Jun 27, 2026 07:53 UTC
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New registry tracks pregnancy in women with rare metabolic diseases
Knowledge-focused CompletedThis study created a registry of medical records from women with inborn errors of metabolism—rare conditions that affect how the body turns food into energy. Researchers collected data from past or current pregnancies and followed babies for one year after birth. The goal was to …
Sponsor: National Human Genome Research Institute (NHGRI) • Aim: Knowledge-focused
Last updated Jul 04, 2026 00:00 UTC
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Study explores how family and friends impact caregiver health
Knowledge-focused CompletedThis completed study looked at how the social networks of caregivers affect their stress and health when caring for someone with an inherited disease. Researchers surveyed over 680 participants, including family members and formal caregivers, to understand caregiving burden and s…
Sponsor: National Human Genome Research Institute (NHGRI) • Aim: Knowledge-focused
Last updated Jul 02, 2026 00:00 UTC
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New study reveals how kids with language delays learn vocabulary
Knowledge-focused CompletedThis study looked at how the way words sound (phonotactic probability) and how they are spelled (orthography) affect vocabulary learning in 23 children with low oral language skills (DLD). All children took part in the same 12-week program, which used real words to improve vocabu…
Phase: NA • Sponsor: Arizona State University • Aim: Knowledge-focused
Last updated Jun 27, 2026 12:34 UTC
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Study reveals HPV vaccine gaps in teens with chronic illness
Knowledge-focused CompletedThis study looked at how many girls and young women aged 11 to 20 with chronic diseases (like diabetes or immune conditions) got the HPV vaccine, compared to those without chronic illness. Researchers reviewed records of 223 participants from a hospital in France. The goal was to…
Sponsor: Assistance Publique - Hôpitaux de Paris • Aim: Knowledge-focused
Last updated Jun 27, 2026 07:59 UTC